Fkedekic j



No. 749,602. IPATENTED JAN.12, 1904.

F; J. BALL. REVERSING MECHANISM.

APPLICATION FILED D110 10, 1903.

N0 MODEL citizen of the United States, and a resident of in which-UNITED STATES Patented January 12, 1904.-

PATENT OFFICE.

REVERSING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 749,602, dated January12, 1904.

' Application filed December 10, 1903.

To all whom it may concern:

Be it known that I, FREDERIG J. BALL, a

the borough of Brooklyn, in the city and State of New York, haveinvented a new and useful Improvement in Reversing Mechanism, of whichthe following is a specification.

My invention relates to an improvement in reversing mechanism, and hasfor its object to provide certain new and useful improvements in theconstruction, form, and arrangement of the several parts whereby themechanism is materially simplified, the constant rotary movement of. adriving-shaft in one direction being caused to impart a rotary movementto a power-transmitting shaft in the same or reverse direction atpredetermined speeds, at pleasure, with a minimum amount of friction.

A further object is to provide a reversing mechanism comprising a rotarydriving-shaft, a power-transmitting shaft, a gear-drum, a clutch-drum, atrain of gearing connecting the drums and shafts, a brake for theclutchdrum, and novel means for throwing the clutch-drum into and out offrictional engagement with the gear-drum.

A practical embodiment of my invention is represented in theaccompanying drawings,

Figure 1 represents an end view of my improved reversing mechanism. Fig.2 is a longitudinal central section through the same, the clutch-drumbeing shown thrown into engagement with the gear-drum and the clutchdrumbrake being shown released. Fig. 3 is a transverse section taken in theplane of the line A A of Fig. 2, and Fig. 4 is a transverse sectiontaken in the plane of the line B B of Fig. 2.

1 designates the rotary driving-shaft, which may be caused to rotatecontinuously in one direction from any suitable source of power. (Notshown herein.) The clutch-drum is denoted by 2 and the gear drum by 3.The drum 3 is provided with anextended central hub 1, within which isfixed the power-transmitting shaft 5, preferably by set-screws 6. Thisshaft is in alinement with the driving- 1 Serial No. 184,582. (Nomodel.)

shaft 1, and an antifriction-washer 7, of fiber or other suitablematerial, may be inserted between the ends of the two shafts. Thedriving-shaft 1 is provided within the drum 3 with a spur-gear 8, whichmeshes with a spur-gear 9, mounted on a stud-axle 10, carried by thedrum 3. This stud-axle 10 also carries a spur-gear 11, fixed to the gear9, which spur-gear 11 meshes with a spur-gear 12, carried by the innerend of a sleeve 13, which is loosely mounted on the driving-shaft 1.

In the accompanying drawings 1 have shown two sets of these gears 9 and11, and their stud-axles 10, mounted within the drum 3 at pointsdiametrically opposite each other for the purpose of balancing the drumand for distributing the wear between the said two sets ofgear. Thesegears are shown as proportioned as follows: The gear 8, carried by thedriving-shaft, is provided with twenty teeth; the gear 9, with which itmeshes, is provided with twenty-five teeth; the gear 11 with seventeenteeth, and the gear 12 with twentyeight teeth. While the above is theproportion of the several gears, as shown in the accompanying drawings,it is to be understood that by varying the relative sizes of the severalgears the speed of the power-transmitting shaft may be varied withrespect to the speed of the driving-shaft.

The drum 3 is provided with an exterior cone 1A, and the drum 2 isprovided with an interior cone 15, fitted to engage and disengage theexterior cone 1 1 for locking and releasing the two drums with respectto each other.

The clutch-drum 2 is permitted a slight lateral movement on the sleeve13 by a featherand-groove connection 16, which also serves to lock thedrum 2 against rotary movement on the said sleeve.-

An adjustable collar 17 has a screw-threaded engagement with the end ofthe sleeve 13 exterior to the drum 2. This collar 17 may be locked indifferent adjustments by a set-screw 18, so as to accuratelylimit thelateral movement of the drum 2 away from the drum-3. A spring 19 isinterposed between the drums 2 and 3, tending to force the drum 2outwardly rection as the driving-shaft.

away from the drum 3 and hold it at the limit of its outward movementagainst the collar 17 The means which I have shown for positivelyforcing the clutch drum 2 inwardly against the tension of the spring 19is as follows: A plurality of dogs 20'in the present instance three areshownare pivoted between lugs 21 22 on the collar 17, the said dogsbeing provided with tailpieces 23, fitted to be forced outwardly by abevel-flange 24 of a clutchslide 25 loosely mounted on thedriving-shaft 1. It is to be understood that any means not shown hereinmay be used for moving the clutch-slide 25. As the clutch-slide is movedinwardly to swing the tailpieces of the dogs outwardly, the inner endsof the dogs will, because of their engagement with the drum 2, force'thedrum inwardly into clutching engagement with the gear-drum 3. As soon asthe dogs are released the drum 2 will be forced outwardly out of itsclutch engagement with the drum 3 by the spring 19.

A brake of any well-known or approved form, that shown herein being aband-brake 26, is provided for locking and releasing the clutch-drum 2with respect to its rotary movement.

The operation of the mechanism is as follows: When the brake 26 isreleased from the drum 2 and the drum 2 is thrown out of its engagementwith the drum 3, the shaft 1 will impart no motion to thepower-transmitting shaft 5. When the brake is released and the cone isthrown into locking engagement with the drum 3, the power-transmittingshaft is driven at the same speed and in the same di- VVhen the brake 26is applied to the clutch-drum 2 and the drum is released from the drum3, the powertransmitting shaft is driven at the same speed, but in thereverse direction to the drivingshaft 1.

The mechanism which I have shown herein is particularly well adapted formarine-work where one speed forward and one speed reversed is requiredand where it is frequently desirable to disengage the power-transmittingor propeller shaft from the driving or engine shaft. However, I do notwish to limit myself to this particular combination of gears, my presentinvention being directed to the novel arrangement of clutch-drum and itsoperating mechanism whereby the use of a third drum in this form ofreversing mechanism is obviated.

What I claim as my invention is 1. A reversing mechanism comprising adriving-shaft, a power-transmitting shaft, a gear-drum, a clutch-drum, abrake therefor, gears connecting the drums and shafts, means forpositively forcing the drums into engagement with each other and meanstending to force the drums apart.

2. A reversing mechanism comprising a driving-shaft, apower-transmitting shaft, a gear-drum held against lateral movement, aclutch-drum arranged to move laterally, a brake therefor, gearsconnecting the drums and shafts, means for positively forcing theclutch-drum into engagement with the geardrum and means tending to forcethe drums apart.

3. A reversing mechanism comprising a driving-shaft, apower-transmitting shaft, a gear-drum, a sleeve, a clutch-drum having alimited lateral movement thereon, gears connecting the drums and shafts,means for positively forcing the clutch-drum along the sleeve intoengagement with the gear drum and means interposed between the drumstending to force them apart.

4. A reversing mechanism comprising a driving-shaft, apower-transmitting shaft, a gear-drum, a sleeve, a clutch-drum having alimited lateral movement thereon, gears connecting the drums and shafts,means for positively forcing the clutch-drum along the sleeve intoengagement with the gear-drum, means tending to force the drums apartand means for adj ustably limiting the outward movement of the drum.

5. A reversing mechanism. comprising a driving-shaft, apower-transmitting shaft, a gear-drum, a sleeve, a clutch-drum having alateral movement thereon, gears connecting the drums and shafts, acollar adjustably secured to the sleeve for limiting the outwardmovement of the clutch-drum, a spring tending to hold the drum at thelimit of its outward movement and means for positively moving theclutch-drum into engagement with the gear-drum.

6. A reversing mechanism comprising a driving-shaft, apower-transmitting shaft, a gear-drum, a sleeve, a clutch-drum having alimited lateral movement thereon, gears connecting the drums and shafts,a collar carried by the sleeve, a plurality of dogscarried by thecollar, a clutch-slide on the driving-shaft arranged to engage the dogsfor causing them to force the clutch-drum into engagement with thegear-drum and means tending to force the clutch-drum away from thegear-drum.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 9th day of December, 1903.

FREDERIC J. BALL.

Witnesses:

FREDK. HAYNES, G- S. SUNDGREN.

